Bhavartha Ratnakara Ch. 11: Results of Dasas & Bhuktis

सूर्यसौम्यौ यदा लग्ने सम्बद्धौ वा परस्परम् । सौम्यस्य तु दशा धन्या भानोः साधारणा स्मृता ॥ १ ॥

sūryasaumyau yadā lagne sambaddhau vā parasparam | saumyasya tu daśā dhanyā bhānoḥ sādhāraṇā smṛtā || 1 ||

When the Sun and Mercury are related by conjunction or aspect, Mercury's Dasa proves highly prosperous, while the Sun's Dasa remains ordinary.

वृश्चिके गुरुशुक्रौ चेदेकत्रैव समन्वितौ । शुक्रस्य तु दशाकाले राजयोगं लभेन्नरः ॥ २ ॥

vṛścike guruśukrau cedekatraiva samanvitau | śukrasya tu daśākāle rājayogaṃ labhennaraḥ || 2 ||

If Venus and Jupiter are conjoined in Scorpio, the native will enjoy powerful Rajayoga during the Dasa of Venus.

Bhavartha Ratnakara — Chapter 11: Results of Dasas & Bhuktis (दशाफलाध्यायः)